CN108843333A - Collapsible Loess District tunneling double-arched tunnel passes through the construction method of existing railway - Google Patents
Collapsible Loess District tunneling double-arched tunnel passes through the construction method of existing railway Download PDFInfo
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- CN108843333A CN108843333A CN201810381162.2A CN201810381162A CN108843333A CN 108843333 A CN108843333 A CN 108843333A CN 201810381162 A CN201810381162 A CN 201810381162A CN 108843333 A CN108843333 A CN 108843333A
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- 238000010276 construction Methods 0.000 title claims abstract description 54
- 230000005641 tunneling Effects 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000004062 sedimentation Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 239000004567 concrete Substances 0.000 claims description 13
- 238000009412 basement excavation Methods 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 239000011378 shotcrete Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 206010044565 Tremor Diseases 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000012552 review Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 208000015181 infectious disease Diseases 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/03—Driving non-circular tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses the construction methods that a kind of Collapsible Loess District tunneling double-arched tunnel passes through existing railway, the present invention excavates middle drift first, in the upper and bottom section for excavating left main hole, finally excavate the upper and bottom section in right main hole, this method is excavated using middle drift and benching tunnelling method, and preliminary bracing and temporary support are performed in time, the stratum settlement of tunnel upper can be effectively reduced, lock foot anchor tube is set at top bar arch springing and effectively inhibits formation subsidence problem；The vault measuring point of subsidence survey point and tunnel cross-section in work progress provided with tunnel upper existing railway, real-time monitoring ground settlement and tunnel vault sedimentation, timely feedback guiding construction, effectively ensure construction safety.Structure of the invention is clear, and construction procedure is reasonable, and stratum settlement control effect is obvious, can effectively ensure the safety of Tunnel Passing existent railway implementation.
Description
Technical field
The invention belongs to constructing metro tunnel fields, and in particular to a kind of Collapsible Loess District tunneling double-arched tunnel is worn
The more construction method of existing railway.
Background technique
Subway has the characteristics that safety, quick, environmental protection as a kind of novel mode of transportation, and each big city in the whole nation is opened
Begin subway construction.Such as 15 routes of Xi'an long term planning, three lines have been opened at present, not with subway line
It is disconnected to improve networking, it inevitably will appear the case where subway passes through existing building, wherein especially to pass through existing railway most
For typical case.Existing railway road pavement requirement of settlement control is more stringent, if metro tunnel excavation process causes ground settlement mistake
Greatly, then it may cause existing railway track irregularity, threaten train operating safety.Single line constructing metro tunnel mostly uses shield at present
Structure method carries out, but special for double-arched tunnel excavated section, can not be using conventional shield construction, and double-arched tunnel is opened
It is larger to dig section, construction disturbs surrounding formations larger, it is contemplated that how the sensibility of Loess Layer ensures Canal in Loess Area doubly-linked
The sedimentation that arch tunnel excavation will not cause earth's surface excessive guarantees that the operation security of existing railway train is an important topic.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of Collapsible Loess District tunneling double-arched tunnels to pass through
The construction method of existing railway, it is ensured that constructing metro tunnel will not impact existing railway train operation.
In order to achieve the above object, the present invention includes the following steps：
Step 1 needs to take dewatering measure if hydrogeology is complicated in Work sectors in work progress, before tunnel excavation
Well-points dewatering measure is used to tunnel range, precipitation depth 1m below bottom plate keeps tunnel to construct under water-less environment；Simultaneously
The ground settlement value that reduction of adopting an effective measure is generated by consolidation settlement, guarantees the safety of tunnel upper pipeline and building；
If Work sectors do not have hydrogeology, step 2 is skipped；
Step 2, establishes settlement monitoring point and the vault monitoring point of tunnel cross-section of existing railway, and real-time monitoring earth's surface is heavy
Drop and tunnel vault sedimentation；
Step 3 sets up advance support along above tunnel tunnel face 150 °, and carries out pre-grouting, improves tunnel
The integral strength of country rock controls subsidence value caused by tunnel excavation；
Step 4 excavates part on middle drift, then performs preliminary bracing and temporary support, continues to excavate middle drift lower part
Divide and performs temporary support；Part on left main hole is excavated, preliminary bracing is performed, and set lock foot anchor tube in interim arch springing, continues
Part under left main hole is excavated, preliminary bracing is performed；And then right main hole upper and bottom section is excavated, and perform supporting and contracting foot anchor
Bar forms a complete construction drilling depth；
Step 5 removes the temporary support between middle drift and Zuo Zhudong and right main hole, performs splash guard, and integrally apply
Secondary lining is done, a drilling depth construction is completed；
Step 6 repeats step 1 to step 4, until passing through existing railway section.
In step 5, when construction, longitudinally answers drop-over, and control tears support length open, closes steelframe in time, carries out lock foot anchor tube construction,
Arch springing sinking displacement is reduced, face shakiness location is blocked using in-network processing.
In step 4 and step 5, preliminary bracing and secondary lining use the construction technology of behind mud jacking, in work progress
Slip casting effect is examined, to guarantee the validity of slip casting measure.
In step 3, advance support uses pipe canopy, and pipe canopy usesSteel pipe, pipe canopy wall thickness 6mm, circumferential spacing 0.40m,
5 ° of outer limb, slurries use cement mortar, and length is that two sides respectively increase 5m after passing through existing railway.
In step 4, preliminary bracing includes grid steel frame and steel mesh, and it is mixed that injection is covered with outside grid steel frame and steel mesh
Solidifying soil, gunite concrete are C25 early strength concrete, thick 300mm, tunneling boring supporting；Grid steel frame spacing 0.5m；Steel mesh breaks entirely
Face sets double layer bar, and ring longitudinal rib isReinforcing bar, just spray with a thickness of 40mm concrete, hang steel mesh, net away from 150mm ×
150mm, steel mesh protection with shotcrete layer are not less than 20mm.
In step 4, every side arch springing is all provided with two lock foot anchor tubes, and lock foot anchor tube usesSteel pipe, length 4m.
In step 5, secondary lining is C40 waterproof armored concrete, and seepage-resistant grade is not less than P10, with a thickness of 400mm.
Before construction, coordinate and elevation to the general spy of proposed place progress, and to design carry out review measurement, to construction infection
The base form of building, structures and underground utilities in range, buried depth, structure present situation situation are investigated, are implemented, being divided
Analysis, research and assessment, and make and reasonably handle and take reliable safeguard measure；
Compared with prior art, the present invention excavates middle drift first, in the upper and bottom section for excavating left main hole, finally
Excavate the upper and bottom section in right main hole, this method is excavated using middle drift and benching tunnelling method, and perform in time preliminary bracing and
Temporary support can effectively reduce the stratum settlement of tunnel upper, and lock foot anchor tube is set at top bar arch springing and effectively inhibits stratum
Subsidence problems；The vault measuring point of subsidence survey point and tunnel cross-section in work progress provided with tunnel upper existing railway, in real time
Ground settlement and tunnel vault sedimentation are monitored, guiding construction is timely feedbacked, effectively ensures construction safety.Structure of the invention is bright
Really, construction procedure is reasonable, and stratum settlement control effect is obvious, can effectively ensure the safety of Tunnel Passing existent railway implementation
Property.
Detailed description of the invention
Fig. 1 is double-arched tunnel sectional view in the present invention；
Fig. 2 is ground settlement measuring point value arrangement map in the present invention；
Fig. 3 is tunnel vault subsidence survey point layout drawing in the present invention；
Wherein, 1 is steel tube shed；2 be middle drift；3 be left main hole；4 be right main hole；5 be preliminary bracing；6 be secondary lining；
7 be lock foot anchor tube；8 be double-arched tunnel；9 be existing railway；10 be monitoring point；11 be temporary support.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
The present invention includes the following steps：
Step 1, coordinate and elevation to the general spy of proposed place progress, and to design carry out review measurement, to construction infection
The base form of building, structures and underground utilities in range, buried depth, structure present situation situation are investigated, are implemented, being divided
Analysis, research and assessment, and make and reasonably handle and take reliable safeguard measure；
Step 2 needs to take dewatering measure if hydrogeology is complicated in Work sectors in work progress, before tunnel excavation
Well-points dewatering measure is used to tunnel range, precipitation depth 1m below bottom plate keeps tunnel to construct under water-less environment；Simultaneously
The ground settlement value that reduction of adopting an effective measure is generated by consolidation settlement, guarantees the safety of tunnel upper pipeline and building；
If Work sectors do not have hydrogeology, step 2 is skipped；
Step 3, establishes settlement monitoring point 10 and the vault monitoring point 10 of tunnel cross-section of existing railway, real-time monitoring
Table sedimentation and tunnel vault sedimentation；
Step 4 sets up advance support along above tunnel tunnel face 150 °, and carries out pre-grouting, improves tunnel
The integral strength of country rock controls subsidence value caused by tunnel excavation；
Step 5 excavates part on middle drift 2, then performs preliminary bracing 5 and temporary support 11, continues to excavate middle drift
2 lower parts simultaneously perform temporary support 11；Part on left main hole 3 is excavated, performs preliminary bracing 5, and set lock foot in interim arch springing
Anchor tube continues to excavate part under left main hole 3, performs preliminary bracing 5；And then right 4 upper and bottom section of main hole is excavated, and perform
Supporting and contracting foot anchor pole form a complete construction drilling depth；
Step 6 removes the temporary support 11 between middle drift 2 and left main hole 3 and right main hole 4, performs splash guard, and
Entirety performs secondary lining 6, completes a drilling depth construction；Drop-over is longitudinally answered when construction, control tears support length open, closes steel in time
Frame, carries out lock foot anchor tube construction, reduces arch springing sinking displacement, is blocked to face shakiness location using in-network processing；
Step 7 repeats step 2 to step 5, until passing through existing railway section.
Preliminary bracing 5 and secondary lining 6 use the construction technology of behind mud jacking, examine slip casting effect in work progress, with
Guarantee the validity of slip casting measure.
Advance support uses pipe canopy 1, and pipe canopy 1 usesSteel pipe, pipe canopy 1 wall thickness 6mm, circumferential spacing 0.40m, outer limb
5 °, slurries use cement mortar, and length is that two sides respectively increase 5m after passing through existing railway.
Preliminary bracing 5 includes grid steel frame and steel mesh, is covered with gunite concrete outside grid steel frame and steel mesh, is sprayed
Concrete is C25 early strength concrete, thick 300mm, tunneling boring supporting；Grid steel frame spacing 0.5m；Steel mesh tunneling boring sets bilayer
Steel mesh, ring longitudinal rib areReinforcing bar, just spray hang steel mesh, net is away from 150mm × 150mm, steel with a thickness of the concrete of 40mm
Muscle in-network processing protective layer is not less than 20mm.
Every side arch springing (including at interim inverted arch) is all provided with two lock foot anchor tubes 7, and lock foot anchor tube 7 usesSteel pipe, it is long
Degree is 4m.
Secondary lining 6 is C40 waterproof armored concrete, and seepage-resistant grade is not less than P10, with a thickness of 400mm.
Monitoring measurement is the direct reflection of construction effect, is the important hand protected in subway work to important building
Section.To guarantee the structure and operation security of running tunnel itself and existing railway in work progress, to section in work progress
Tunnel and existing railway are monitored measurement.Monitoring range is the length range along tunnel, under ground cut tunnel construction meeting pair
Existing railway should be reinforced monitoring in the range of impacting, and the 50m (test section) before running tunnel constructs and reaches existing railway
With construction by rear 30m as emphasis monitoring section.One monitoring section is set along tunnel axial spacing 5m, carries out Vault settlement prison
It surveys, monitoring point 10 is arranged at tunnel vault；Along existing railway direction：50m is extended in the every side in running tunnel two sides, on railway road
A subsidence survey point 10 is arranged in 2~5m of spacing on base.
Embodiment (Double Multi-Arch subway tunnel crossing Xikang Railway)：
1) general spy is carried out to proposed place before construction, and review measurement is carried out to the coordinate of design, elevation, to construction infection
The base form of buildings or structures, underground utilities in range, buried depth, structure present situation situation further investigate, implement, analyzing,
It studies, assess, making and reasonably handle and take reliable safeguard measure,
2) hydrogeology is complicated in Work sectors, takes dewatering measure in work progress, must be to tunnel model before tunnel excavation
It encloses using well-points dewatering measure, precipitation depth 1m below bottom plate, tunnel is kept to construct under water-less environment.
3) steel tube shed 1 is set along above tunnel tunnel face 150 ° first before construction, and carries out pre-grouting, improved
The integral strength of tunnel surrounding controls subsidence value caused by tunnel excavation；
4) first step excavates part on middle drift 2 when constructing, and then performs preliminary bracing 5 and temporary support 11, continues out
It digs the lower part of middle drift 2 and performs temporary support；Part on left hole 3 is excavated, performs preliminary bracing, and set lock in interim arch springing
Foot anchor tube continues to excavate part under left hole 3, performs preliminary bracing；And then right 5 upper and bottom section of hole is excavated, and perform branch
Shield and contracting foot anchor tube 7 form a complete construction drilling depth.
5) temporary support 11 between middle drift 2 and the main hole in left and right is removed, performs splash guard, and integrally perform secondary lining
3.Drop-over is longitudinally answered when construction, control tears support length open, closes steelframe in time, carries out lock foot anchor tube 7 and constructs, reduces arch springing sinking position
It moves, face shakiness location is blocked using in-network processing.Strict implement just props up the construction technology of 5, two 6 behind mud jacking of lining.
Slip casting effect is examined, often to guarantee the validity of slip casting measure.
6) monitoring point 10 and the tunnel vault settlement monitoring point 10 of Xikang Railway are devised in construction, real-time monitoring earth's surface is heavy
The changing rule that drop and Vault settlement are carried out with construction changes construction method if discovery sedimentation and deformation is abnormal in time, it is ensured that construction
That is the operation security of existing railway.
7) pipeline is checked in work progress in time, reinforces advance geologic exploration and geology verification, timely feedbacks measurement information,
As discovery have it is abnormal or and different design, the units concerned such as management, design should be notified to decide through consultation treatment measures jointly in time.
8) it after a drilling depth construction, repeats the above steps, until safety existing railway section.
Claims (8)
1. the construction method that Collapsible Loess District tunneling double-arched tunnel passes through existing railway, which is characterized in that including following
Step：
Step 1 needs to take dewatering measure if hydrogeology is complicated in Work sectors in work progress, to tunnel before tunnel excavation
Road range uses well-points dewatering measure, and precipitation depth 1m below bottom plate keeps tunnel to construct under water-less environment；It takes simultaneously
Effective measures reduce the ground settlement value generated by consolidation settlement, guarantee the safety of tunnel upper pipeline and building；If
Work sectors do not have hydrogeology, then skip step 2；
Step 2, establishes settlement monitoring point and the vault monitoring point of tunnel cross-section of existing railway, real-time monitoring ground settlement and
Tunnel vault sedimentation；
Step 3 sets up advance support along above tunnel tunnel face 150 °, and carries out pre-grouting, improves tunnel surrounding
Integral strength, control tunnel excavation caused by subsidence value；
Step 4 excavates part on middle drift (2), then performs preliminary bracing (5) and temporary support (11), continues to lead in excavation
Under hole (2) part and perform temporary support (11)；Part on left main hole (3) is excavated, performs preliminary bracing (5), and encircle temporarily
Foot sets lock foot anchor tube, continues to excavate part under left main hole (3), performs preliminary bracing (5)；And then excavate right main hole (4) top
Point and lower part, and perform supporting and contracting foot anchor pole, form a drilling depth of completely constructing；
Step 5 removes the temporary support (11) between middle drift (2) and left main hole (3) and right main hole (4), performs waterproof
Plate, and secondary lining (6) are integrally performed, complete a drilling depth construction；
Step 6 repeats step 1 to step 4, until passing through existing railway section.
2. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, in step 5, when construction, longitudinally answers drop-over, and control tears support length open, closes steelframe in time, carries out lock foot anchor tube and applies
Work reduces arch springing sinking displacement, is blocked to face shakiness location using in-network processing.
3. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, preliminary bracing (5) and secondary lining (6) are applied using the construction technology of behind mud jacking in step 4 and step 5
Slip casting effect is examined during work, to guarantee the validity of slip casting measure.
4. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, advance support uses pipe canopy (1) in step 3, pipe canopy (1) is usedSteel pipe, pipe canopy (1) wall thickness 6mm, ring
To spacing 0.40m, 5 ° of outer limb, slurries use cement mortar, and length is that two sides respectively increase 5m after passing through existing railway.
5. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, preliminary bracing (5) includes grid steel frame and steel mesh in step 4, it is covered with outside grid steel frame and steel mesh
Gunite concrete, gunite concrete are C25 early strength concrete, thick 300mm, tunneling boring supporting；Grid steel frame spacing 0.5m；Reinforcing bar
Net tunneling boring sets double layer bar, and ring longitudinal rib isReinforcing bar, just spray with a thickness of 40mm concrete, hang steel mesh, net away from
150mm × 150mm, steel mesh protection with shotcrete layer are not less than 20mm.
6. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, every side arch springing is all provided with two lock foot anchor tubes (7) in step 4, lock foot anchor tube (7) is usedSteel pipe, it is long
Degree is 4m.
7. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, secondary lining (6) is C40 waterproof armored concrete in step 5, seepage-resistant grade is not less than P10, with a thickness of
400mm。
8. tunneling double-arched tunnel in Collapsible Loess District according to claim 1 passes through the construction method of existing railway,
It is characterized in that, coordinate and elevation to the general spy of proposed place progress, and to design carry out review measurement, to construction before construction
The base form of building, structures and underground utilities in coverage, buried depth, structure present situation situation investigated, are implemented,
Analysis, research and assessment, and make and reasonably handle and take reliable safeguard measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810381162.2A CN108843333A (en) | 2018-04-25 | 2018-04-25 | Collapsible Loess District tunneling double-arched tunnel passes through the construction method of existing railway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810381162.2A CN108843333A (en) | 2018-04-25 | 2018-04-25 | Collapsible Loess District tunneling double-arched tunnel passes through the construction method of existing railway |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630284A (en) * | 2019-09-28 | 2019-12-31 | 广州地铁设计研究院股份有限公司 | Settlement active control structure and method for construction of closely-adhered underpass existing subway station |
| CN111022068A (en) * | 2019-12-21 | 2020-04-17 | 西安建筑科技大学 | Construction method for enabling pipe-jacking tunnel to penetrate existing building downwards and construction working face of construction method |
| CN111140237A (en) * | 2020-01-08 | 2020-05-12 | 合肥市轨道交通集团有限公司 | Underground excavation method for subway tunnel tunneling |
| CN111734423A (en) * | 2020-07-30 | 2020-10-02 | 中铁隆工程集团有限公司 | Primary support method for underground tunnel passing through airport terminal building |
| CN112253142A (en) * | 2020-11-27 | 2021-01-22 | 鲁东大学 | Construction method for short-clear-distance upward-crossing main tunnel of connecting air duct of deep and long tunnel |
| CN112682048A (en) * | 2020-12-31 | 2021-04-20 | 中铁大桥局集团第五工程有限公司 | Replacement and reinforcement construction method for newly-built tunnel to span existing tunnel at small clear distance |
| CN113266374A (en) * | 2021-07-02 | 2021-08-17 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for lower anchor section of loess tunnel of high-speed railway |
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| CN114320340A (en) * | 2021-12-28 | 2022-04-12 | 中铁第六勘察设计院集团有限公司 | Large-span pillar-free underground tunnel structure and method based on advanced pilot tunnel and counter-pulling anchor cable |
| CN114960744A (en) * | 2022-05-11 | 2022-08-30 | 中铁北京工程局集团有限公司 | Reverse construction method for road to pass through existing expressway |
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